Astronomical! Depends on the point of impact, the type of aircraft, where you are sitting in the aircraft, amount of fuel on-board, location of crash, and last but not least, your willingness to survive!
There are multiple factors that would determine an exact answer-- point of impact, number of people on the plane, the cause of the crash, etc.
Yes. Many people have.
Yes
Yes he does survive the plane crash
In Smolensk plane crash? 96 people.
Car crash. Sadly, its true. Planes rarely crash but depending on where the crash is it can give you almost no chance of surviving, like the oceans. Less people die from car crashes then plane crashes a year, but don't worry about it. The chance of being in a crashing plane are 1 in 11 million, so if your going on a plane ride, don't worry.
No one knows?
Most people survive plane crashes. I have been in one. It was scary, to say the least. You do not make the news though when no one gets hurt.
it crashed by a different plane that was goig to crash by a building but it landed by them
No, everyone perished, including the pilot.
No
bend down on your knees while in the chair and cover yourself with a blanket
Relief is usually sufficient !